Pipe-cutting machine.



H. J. HAMER.

PIPE CUTTING MACHINE. APPLICATION FILED AUG.28. 1914.

Patented J an. 4, 1916.

2 SHEETS-SHEET l.

l@n1-HCI mma o COLUMBIA PLANonRAPH :0., WASHINGTON. D. CI

H. Jv. HAMER.

PIPE CUTTING MACHINE.

APPLlcAnoNnLED Aue.2s. 1914.

COLUMBIA PLANUURAPH zo., WASHINGTON, D. c.

. TED .STATES {PATENr onirica. .N

l HQWARD JQ riMiiafor nnir., rii-N'NsYLvANiA, 'AssieivoafrounancxrMANUFAC- i. To aZZaotom concern.'

'.-ncitizen of the Erie, n the county I Pennsylvania, lhave ful 'fImprovements i Y and .holding tion. oftherpe.,

iis a .centrali 'section through the four-way avalvecontrolling v .A.the cutterr head.

upright 'posts extending tfrom theftop` of fin-which the cutter carriers8 are slidably Lis aside view; of the actuating. collar. 5 isahoriontalsection of the pipe feeding .i lf mounted TURiNG COMPANY, or nain,PENivfsvLvANIA,V A CORPORATION or riiNNsYLvANiAi l rire-Cummins.ivrfAciiinE. a

i Specification of 1tetters 'atentp 'l y., Applikation niegiAugustz,i914. s eriaiivo. 859,051.

Be itl known `'that LiHoWARD .l. a

.United St ates', residing Y at invented new andv use TheV objectief theinvention `is to cut E.

Vpredetern'iined leii'gthsof pipejas .for nipj ples. Witlialmacli'ineofthis type,it is desirable `to' have. this operation accomplished .withgreat rapidity and; thisjniachine .ac-

complishes Vthis purpose, I,

' The .invention is illustrated in the accompanying drawingsasfollgivvsif-4 Figure/1 is ing Avertically through is a f'section onthe `a longitudinal section Eextendthe machine. Fig. 2 rline 2 2 inFig. 1. Fig.

3 is a rearV view of thecutter. head. Fig. 4 .l

mechanisms on the line 5-5 in* Fig. .1. l :V Fig. `(Sis a side view' ofvthe pipey 'gripping'mechanisin Fig: 7,isa rside elevafeeding mechanism.Fig. 84

Y sages 29 and 30 `respectively Acontrolling valve 31.Y f .7 f, 1 Theycontrolling lvalve ,has p assage'fl connected withl the-supply pipe 33,this ',-supthe fluidV motor actuating frame `of the finaichine,` 2-1-2 1marks. the

Athe machine in which are the spindle bearings 3 8. A .pulley spindle4is journaled Ain the .bearings Z3-.3. .A drive pulley is on the spindle4 and drives the-.

The cutter head 6l is fixed` onthe Roller cutters 9 are journaled in.

thev uinn .,griers have the notches 8a in their `outer ends` .fandfthearms 10 extend into these notches.V

flllel arms, 10V are ",twoarms forming a of Erie and Statefof inlipeutting 'May chines, of ,which the following is a specilication.J

V`with .the Ways and.

er ends of the carriers 8. The carf pivoted on ythe pins 11, thejpinsbeing carried by the head 6.' An arm ,.12 extendsfinwardly from thearm-10, they actuating collar .14, the ears .'be'ng providedpnthecollar-14 to which the jY f iiks iam aaahea. f it Twin be readilyobserved that as the actuating collarf14 is Y ieciprocatedon the spindle4, the bell crank leversforined by the arms y10 and 11 are swung,movingthecarriers 8 inwardly and t voutwardly so aste forcethe rollercutters 9 into the Iwork andto return them., to their outer position`Inthis way,-th'e cutters are forced inwardly sufficiently tocut offlengths of pipe and then returned,`t he cut off portions of the `pipebeing dischargedthroiigh the openingV inthe spindle 4.

.fratenteii Jan. a, 1916.

The actuating. .collar V1 4 `has anfannular groove 16 vin which isarranged jajringul? .The forked'ilever 17 isfpiyotally secured lto each`side of the ring 16?. The lever is ful cruined on a post la andithelowerl end'of `the lever extends into'a slot 1811i asl'ide 19. .,r Theslide 19 iscarried on a1 guide 20 extends;V

ing from; thefraine. 1. r The slide'issecured V4to .tliepiston rod 21.Thefpistonrodis ac- Vtuated by lthe piston '22.' The piston 1.22, isarranged in the cylinder 23,

readily seen cated, the slide 19 is reciprocatedandthe lever. 1'( isthus rockedso as to reciprocate thefactuating collar, 14 so as todrivethe derfhasthe ports 25. and 26 connected by the pipes .27. and 28respectivelywith thefpasy ofthe fourway the cylinder i `I Qeing carriedby theframegv It will that "as the piston; isj-reciprog .'cutters intoVandout of the work. The cylin.,

sages 29 and 3.0 re speetivel.'YL-y It also has the way 375 leadingtothe passage 32and the way V38 leading to theexhaust. A plug 139 has theways 41 and 42. As shown inF-ig. 8, the'valve is'closed. Y Itwillbereadily seen thatv if the valve isswung one-eightlifrevo-Qconlutioneithe'r passagel29 or 3.0 maybe The plug `39 has an .extension43 4 to which a crank 44. is connected. VAThe Vcrank is'v connected by aso arranged -that with a-vdowm ward movement of-` the pedal, air isturned into Vthe passage v29 and thus .forces theV pislink 45 with thepedal-46; Thevv pedal is pivotally mounted at 47. The fourway valveiston 221mm@ rightas shown .inf Fig-...L i Thisy carries the actuatingcollar 14 to the left and forces the cutters into the work. lVhen thepedal is released,.the valve is reversed. The plug is swung so as toconnect vthe passage 29'with the exhaust and the passage 30 with thesupply. The piston is then moved in the opposite direction so as torelease the work.

A stop rod Li8 is secured to the slide 19. It extends 'through a stopprojection 49 on the frame. It has the adjustable blocks 50. Byarranging these blocks 50, the travel of the carriers may be limited andvaried for different sizes of pipe.

The pipe feeding and holding mechanism is asrfollows1-Uprigh'ts 5l aremounted on the frame l. These have the guide openings 52 through which`the pipe 53 extends. A guide rod 54 is mounted on the upper ends of theuprights 5l. A slide 55 is mounted on the guide ro-d 54. It has thefeeding frame 56 arranged beneath. The feeding frame 56 has the guides57-57 extending transversely across itin which the slides y58--58 aremounted. The slides 5858 have lthe toothed ends 59 fo-r gripping thepipe. The rear slide-58 is locked inposition and adjusted for differentpipes by a screw 60. The front slide 58 is engaged by a screw 61. Thescrew 6l is carried by an arm 62 extending from the hand lever 63. Thehand lever 63 is mounted on a pin 64 between the fingers 65 extendingfrom the frame 56. A stop finger 67 extends from the lever 63 andengages the frame 56.

It will be readily observed that when the lever 63 is pushed toward theleft, or forhr ward, the screw 6l is forced inwardly and carries with itthe forward slide 58 against the pipe 53, thus engaging the pipe so thatit can be fed forward. As the pressure on 'the lever 63 is reversed, thepressure on the screw 6l is relieved so that the pipe is released. Astop 67 limits the rearward movelment of the lever 63, however, so thatwhen pressure is exerted in this direction, the gripping mechanism canbe moved toward the rear. The slide 55 moves forward on the guide rod 54as the pipe is moved forward v.with pressure on the lever 63 toward theleft and slides toward the rear when pressure on the lever 63 isreversed. From this it-will be seen that all that is required of theoperator is to force the feeding frame to the right against the stop 68while the pipe is gripped and being cut and upon the completion of thecut and the release of the V,gripping mechanism a simple movement ofVthe handle of the lever 63 toward the left feeds forward the pipe to thepre-determined distance desired.

lThe pipe is gripped during the cutting action so as to hold itagainst arotation and against movement by the following mechan ism: Guides 5laare mounted on the upright 5l nearest the cutting head. These extend.the usual manner. A grip lever 7l is mounted on a pm 72. An arm 7 3extends upwardly from the pivot. The lever 7l and arm 73 making abellcrank lever. A grip point 74 is arranged on the end of the arm 73 inposition to engage the pipe and force it into the notch 70, the edge orpoint 7 4l gripping the pipe so as to prevent its turning. The pivot pin72 is mounted in a block 7 5 which is slidingly mounted in a slot 75 inthe frame 69. A screw 76 is provided for adjusting the block 75 in theslot 7 5a so as to properly position the arm 73 for different sizes ofpipe. The sliding frame 69 permits the frame as a whole to accommodateitself to the pipe.

In the general operation ofthe machine, the grip lever 7l is depressedso as to dis engage the pipe 53. The lever 63 `is forced toward the leftshoving the pipe forward to the limit of the movement of the slide 55.rlhe gripping lever 7l is raised again engaging the pipe. The pedal 46is depressed turning the air on the left hand side of the cylinder 23and tlius forcing the'roller cutters 9 throughY the pipe. The pedal isreg leased, gravity reverses the airon the piston, thus moving thecutters out of position. The grip lever is depressed, disengaging thepipe and the feeding lever is again moved forward feeding forward a newlength ,of pipe to be out olf. The feeding lever which has been returnedto the right during the time that the pipe is gripped and the cuttingaction is taking place, is again fed forward, or moved toward the leftmoving in a new length of pipe. This sequence of movements with thismachine using the roller cutters and the air feed which gives a uniformpressure with the system of gripping and feeding utilizing the twohands, the cutting' action being controlled by the foot, is very rapid.

What I claim as new is 1. In a pipe cutting machine, the combination ofa rotating head; movable cutters mounted on said head; mechanismforhactu ating said cutters, said mechanism exerting a uniform pressureon said cutters; anda manually controlled device for feeding the pipeforward.

2. In a pipe cutting machine, the combination of a rotating cutting11e-ad; movable cutters mounted on the head; foot controlled mechanismfor actuating said cutters, said mechanism exerting' a uniform pressureon said cutters; and a hand controlled device for feeding pipe forward.

3. In a pipe cutting machine, the combination of a rotating cuttinghead; movable limi lll@

cutters mounted on the head; foot controlled mechanism for actuatingsaid cutters; a hand controlled device for feeding pipe forward; and ahand controlled device for locking the pipe against turning during thecutting action.

d. In a pipe cutting machine, the combination of a rotating cuttinghead; a device for actuating the cutting head and adapted to exertuniform pressure on said head; a pedal controlling said actuatingdevice; a gripping device for locking pipe against turning; a hand leverfor controlling said gripping device; a feeding device for feeding pipeforward; and a hand lever for actuating the feeding device.

5. In a pipe cutting machine, the combination of a rotating cuttinghead; a fluid actuated device for actuating the cutting head; a pedalcontrolling the fluid actuated device; a gripping device for locking thepipe against turning; a hand lever for controlling said gripping device;a feeding device Copies of this patent may be obtained for feeding thepipe forward; and a hand lever for actuating the feeding device.

6. In a pipe cutting machine, the combination of a rotating cuttinghead; a iiuid actuated device for actuating the cuttin head; a pedalcontrolling the iiuid actuate' device; a gripping device for locking thepipe against turning; a hand lever for controlling said gripping device;a feeding device for feeding the pipe forward; and a hand lever foractuating the feeding device, said hand lever being adapted toautomatically engage the pipe When moved forward and to automaticallyrelease the pipe on a return movement.

In testimony -whereof I have hereunto Set my hand in the presence of twosubscribing Witnesses.

` HOWARD J. HAMER.

Witnesses BLANCHE M. HARTMAN, THOMAS C. MILLER.

Washington, D. C.

